Fritz burr



Patented Feb. 7, |899.

E. Dnn. FRICTION GEARING.

Application #led Apr. 15, 1898.)

(No Model.)

[h1/azz for:

TH: nonms PETERS cm Murau-mo., msmuu'rou. u. c.

UNITED STATES PATENT OFFICE.

FRITZ DRR, oF BERLIN, GERMANY.

FRICTION-GEARING.

SPECIFICATION forming part of Letters Patent No. 619,152, dated February 7, 1899.

Application filed April l5, 1898. Serial No. 677,716. (No model.)

To all whom it may concern,.-

Be it known that I, FRITZ DEE, a subject of the Emperor of Germany, and a resident of Berlin, in the Kingdom of Prussia and Empire of Germany, have invent-ed certain new and useful Improvements in Friction-Gearing, (for whichI have filed applications for Letters Patent in Germany, dated September 18, 1897; in Denmark, December 10, 1897; in Sweden, December 10, 1897; in Hungary, December 15, 1897, and in Norway, Decemberl, 1897, and for which I have obtained Letters Patent in Great Britain, No. 29,601, dated December 14, 1897, and in France, No. 270,196, dated April 16, 1898;) and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, and to the letters of reference marked thereon, which forms part of this specification.

My invention relates to a friction-gearing which can alternately be put into connection with two different power-transmitting mechanisms.

My improvement comprises a large frictionwheel having three peripheral anges providing two outer friction-flanges and a double friction-hangs located intermediate of the outer friction-flanges and a divided frictionwheel having friction-flanges adjustable with relation to the double friction flanges of the large friction-wheel, as hereinafter described and claimed.

In order that my invention may be fully understood, I will proceed to describe it with reference to the accompanying drawing, which shows a diametric section of my improved friction-gearing.

ais a large friction-wheel formed with three peripheral flanges providing two outer friction-fiangcs b of equal diameter and an intermediate double friction-flange c.

g is ashaft on which is mounted a divided friction-wheel, consisting of two members d and e, capable of being shifted to or from each other. These halves are each provided on the inner side with a friction-liange m and on theonter side with a friction-harige n. The frictional half-wheel d possesses a broad bush-shaped nave f and can be moved along the shaft g, but not revolubly adjusted, and is provided with a regulating-ring a. The half-wheel, with its nave s, is movably adjusted on the nave f. The moving to and from each other of the two half-wheels d and e is accomplished by means of two forked levers, of which each is on one side, in connection with a shipper-ring h, working in the groove of the regulating-ring a, and the other with a shipper-ring 7L', Working in the groove of the nave s. In the drawing these forked levers are onlyshown by dotted lines and oscillate about the pivot-points t', so that if the half-wheels d and c are moved toward each other both their friction-flanges m bind on the double friction-hangs c of the friction-wheel ct and one of the transmission ratios steps into action. If, however, it is desired to operate the other transmission ratio, then both halfwheels d and c are shifted so far asunder that the friction-flanges n of the half-wheels d and c bind on their respective friction-Hanges b of the friction-wheel a.

If the gearing is to be placed entirely out of gear, the half-wheels d and e are shifted to such an extent that they will not bind on the frictionflanges b nor the double frictionfiange c.

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

l. A friction-gearing comprising a frictionwheel having three peripheral iianges providing outer friction-anges and a double friction-flange located intermediate of the outer friction-flanges, a divided friction-wheel hav# ing members provided with inner and outer friction-anges,and means whereby the members of the divided friction-wheel are adjusted with relation to the friction and double friction flanges of the other friction-wheel; substantially as described.

2. VA friction-gearing comprising the Wheel a. having the fIiction-iianges b and projecting double friction-flange c, the divided frictionwheel having one member ol provided with a nave f, a regulating-ring e, an inner frictionfiange m, an outer friction-flange n, and another member e provided with a nave s, an The foregoing specification signed at Berinner friction-Hnge m and an outer friction- 1in this 30th day of March, 1898. fiange n, and means whereby the members of the divided friction-wheel are zidjusted with FRITZ BURR' 5 relation to the friction and double friction In presence ofanges of the other friction-Wheel; substztn- W. MOCK, muy as described. l c. H. DAY. 

